Flora of North America species comparison

erect or ascending, clustered, 80–200 cm, copiously branched distally, striate, densely ascending or appressed white-pubescent on ridges.

stipules subulate, 4–8 mm;

petiole 5–10 mm, longer than rachis;

leaflet blades narrowly obovate or narrowly obdeltate, apex obtuse to rounded, truncate, or retuse, apiculate, surfaces densely white-appressed-strigose abaxially, sparsely appressed-puberulent or glabrescent adaxially, scarcely reticulate-veined between principle lateral veins abaxially;

terminal blade 7–32 × 2–8 mm, length 3–5 times width.

2–4-flowered, closely flowered, flowers chasmogamous and cleistogamous, chasmogamous with 2–4 flowers, cleistogamous usually with (1 or)2 flowers at base of peduncle, racemes shorter than to 1–4 times length of subtending leaves.

shorter than subtending leaves, scarcely pedunculate.

1.5–2 mm;

bracteoles shorter than calyx tube.

chasmogamous 6.5–8 mm;

calyx 3–4.5 mm, tube 1 mm;

lobes 4, lateral triangular, 2–3.5 mm, deeply 4-lobed, adaxial pair proximally connate most or part of their length;

corolla white to pale yellow and pale purplish striate, or with blotch at throat adaxially, wing and keel petals white;

wings 6–7 mm;

keel 6–7.5 mm; cleistogamous flowers 2 mm, calyx lobes usually 1-veined, rarely with 1 distinct midrib and 2 inconspicuous lateral veins.

sparsely appressed-pubescent or glabrescent;

stipe 0.5 mm; chasmogamous, deciduous, distinctly exserted from calyx, elliptic-oblong or broadly elliptic, 3.5–5 × 2–3 mm, cleistogamous suborbicular, 3 × 2 mm.

= 20.